Take-up mechanism for looms.



QPA'TEN'IBD MAR. 19, 1907.

- C. .F.ROPER. TAKE-UP MBGHANISM FOR LOOM-S.

APPLIOATION'PILED JAN. 17, 1906.

2 SHEETS-SHEET 1.

1n: NORRIS PETERS co, wAsHmaTuN, n. c,

lie-847,608. I PATENITED MAR. 19, 19 07.

-- 0. F. ROPER.

TAKE-UP MECHANISM FOR LOOMS. APPLIOAT'ION mum JAIL17, 1906.

2 SHEETS-SHEET 2.

114s NORRIS PETERS co., wnsnmcnm. u. c, v

U TTE STATES ATENT @FFIGE.

CHARLES F. ROPER, OF HOPEDAEE, MASSACT IUSETTS, ASSIGNOR To DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION F MAINE.

Specification of Letters Patent.

Patented March 19, 1907.

Application filed January 17, 1906. Serial No. 296,456.

To all whmlt (it Trtcty concern:

Be it known that I, CHARLES F. ROPER, a citizen of the United States, and a resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Take-Up Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawings representing like parts. 0

In United States Patent No. 807,580, granted to me December 19, 1905, a positive take-up mechanism for looms is shown and described embodying a positive and continuous take-up of the cloth, which permits of easy manipulation by the weaver to let back the cloth when necessary, but preventing any advance or turning ahead by the weaver while the loom is running.

My present'invention has for its object the roduction of take-up mechanism of the positive type combined with means for effecting automatically let-back in an equally positive manner, and I have herein shown my present invention embodied in take-up mechanism comprehending the general structure and arrangement set forth. in the aforesaid patent.

An automatic filling-replenishing doublefork loom is herein shown, detection of filling absence effecting arrest of take-up until a change or replenishment of filling has been effected automatically, and in accordance with the present invention the arrest of takeup is accompanied by positive let-back of the cloth, the means for effecting the same being rendered inoperative automatically when the take-u action is resumed.

The varlous novel features of my invention will be fully described in the subjoined specification, and particularly pointed out in the following claims.

Figure 1 is a front elevation, centrally broken out, of art of a double-fork automatic filling-rep enishing loom'with one embodiment of my present invention applied thereto. Fig. 2 is a transverse sectional view on the line 2 2, Fig. 1, looking toward the left. elevation and partial section of the driving member of the take-up mechanism, the letback means, the clutch, and the transmit- Fig'. 3 is an enlarged detail in front A Fig. 4 is a top plan view of the parts illustrated in Fig. 3.

The loom side 1, breast-beam 2, operating rock-shaft 4 to control the operation of the automatic filling-replenishing mechanism 5, (shown at the right-hand side of Fig. 1 and substantially the same as shown and described in bnited States Patent N 0. 529,940, granted November 27, 1894, to J. H. Northrop,-) the upturned arms 6 and 7, fast on the rock-shaft and in the paths or movement of the outer ends of the wert-fork slides 8 and 9, respectively, the loom being equipped with double-fork mechanism, and the shipper 10 may be and are all of Well-known Construction and operate in usual manner.

Detecting action of either of the fillingforks mounted, respectively, on the slides 8 and 9 turns the rock-shart 4 and effects filling replenishment and arrests the operation of the take-up mechanism, as in my patent referred to.

The core 12, on which the roll of cloth 13 is wound, the stands 14, in which said core is mounted, the take-up roll 15, having its shart 16 suitably supported, and the wormgear 19, Fig. 3, rast on the shaft, the casting 26, having bearings for a shaft 28, provided with a worm 29, in mesh with the worm-gear 19, and the large worm-gear 30, fast on the rront end of the shart 28, in mesh with a worm 31 on the hub 32, are all as in my before-mentioned patent.

The casting 26 has a sleeve-bearing 34, in which is rotatably mounted a shart 35, reduced in diameter at one end at 36, (see Fig. 3,) and a notched collar 37 is pinned onto the reduced part of the shaft, ad acent to which collar the driving member (shown as a sprocket 38) is rotatably mounted on the larger part of the shart 35, said sprocket hav ing a radial recess 39 in its outer race.

A clutch device, comprising a collar 40, is slidable on the part 36. The collar 40 of the clutch device has a tooth or lug 41 to enter the notch of the collar 37, and it is normally held in the radial notch 39 of the driving member by a spring 42, bearing against the outer face of the annular enlargement or disk 44, forming a part of the clutch, said spring being held in place by a nut 43, as clearly shown in Fig. 3. The clutch is at all times ting-train between it and the take-up roll. I rotated in unison with the shaft 35, as will be manifest, while longitudinal movement of the clutch against the spring 42 withdraws the lug 41 from engagement with the driving member 38, so that the latter may rotate freely upon the shaft.

The usual cam-shaft 52 (see dotted lines, Fig. 1,) is provided with a sprocket 53, and a sprocke t-chain 54, also shown in dotted lines, connects it with the driving member 38, said sprocket-chain serving as the actuator for the driving member and rotating it continuously so long as the loom is running. The driving member 38 rotates twice for each revolution of the cam-shaft, so that each revolution of the driving member corresponds to one pick of the loom, and the rev olution of the take-up roll when connected with the driving member is positively measured by the amount of revolution of the camshaft, all of the mechanism so far described being substantially as shown in my Patent N 0. 807,580. In said patent, however, when the clutch is disengaged from the driving member by means to be referred to hereinafter the rotation of the take-up roll 15 is arrested, and take-up of the cloth is thereby arrested or ceases while the driving member makes one complete revolution oruntil the lug 41, such arrest of take-up corresponding to one pick. The worm 31, which is normally connected to rotate with the shaft 35, the worm-gear 30, worm 29, and intermeshing worm-gear 19 constitute an operating, connecting, or train of transmitting gearing between the shaft 35 and the take-up roll, so that rotation of the said shaft will effect rotation of the take-up roll.

In my present invention I have provided means for effecting positive let-back of the take-up roll when take-up is arrested, and this is secured by reversing the direction of rotation of said take-up roll, the let-back taking place while take-up is arrested and consequently for one pick in the structure herein illustrated.

In accordance with my present invention the driving member 38 is provided with a beveled gear 70, secured to or forming a part of said member and meshing with a second beveled gear 71, which latter constitutes a reversing device or member, it being continuously driven by the member 38 so long as the loom is running and in an opposite direction, as will be manifest. The hub 7 2 of said reversing member or gear is mounted on an upright stud 73 at right angles to the shaft 35 and fixedly supported in a suitably-shaped arm or bracket 74, forming a part of the casting 26, the axial lines of the shaft 35 and stud 73 intersecting. The diskor enlargement 44 of the clutch is provided with a gear 75, which is, as shown in Figs. 3 and 4, a comb nation of spur and bevel gear, the normal position thereof being shown in said Fig. 3 out of mesh with the teeth of the reversing member or gear 71. When, however, the clutch is moved to the right, viewing Fig. 3, to disengage the lug 41 from the driving member, the gear 75 is brought into mesh with the reversing-gear 71, and immediately the rotation of shaft 35 is resumed, but in a reversed direction. This will be clear from an inspection of Fig. 3, for the gears and (when both are in mesh with the reversinggear 71) mesh with the same on opposite sides of its center of rotation, hence the reversal of rotation of the shaft 35. Such reverse rotation of the shaft 2" s through the transmitting-goaring to positively turn the take-up roll 15, but in the reverse direction or backward, so as to positively let back the shaft. The let-back mntinues while take-up is arrested, which manifestly is for one complete revolution of the driving member 38. Should the absence of filling be detected, the replenisl'iing mechanism will be operated to provide the shuttle with a fresh supply of filling in well-known manner, and the arrest of take-up and positive let-back are effected during the replenishing operation by or through detection of filling absence by either fork. notch 39 again comes opposite to the clutch- I The downturned arm 55, fast on the rocl shaft 4, has bolted to it a plate 56, Figs. 1 and 2, laterally offset at its lower end at 56* and provided with the rearward. extension 57. having a beveled face 53 (see Fig. 4-) co ")perating with the beveled face 50 of the finger 60, Fig. 2, projecting from the upright bar 61, the latter being fulerumed on a vertical pin 63 to swing laterally, said pin. being held in the stand 64, secured to the cloth-roll stand 14, all substantially as in my patent above referred to, except that the bar 61 in the present instance does not of it self engage the disk 44 of the clutch. A resilient or spring inger 76 is attached by a bolt 77 to the bar 61 and projects forward against the inner face of the disk portion 44 of the clinch, as best shown in Fig. at, the said -linger being, however, considerably stilfer or stronger than the spring I have shown in Fig. '2 this linger as adjustably mounted on the up right bar 61 to enable the finger to at all times engage the inner face of the clutchdisk 44;, no matter what the adjustment of the take-up mechanism, for it will be remembered by reference to my previous patent that said take-up mechanism is vertic: lly adjustable practically as a unit. \Yhcn the rock-shaft 4' is turned by outward movement of either arm 6 or 7 the downturned arm 55 is swung rearnutrd and forces the plate 5e reanvard, and as the beveled face 53 slides over the face 59 the finger ()0 and the bar (31 will be swung to the right on the fulcrum (i3, viewing Fig. 4. This movement causes the finger 76 to press against the clutch-disk and to move the clutch bodily outward upon the shaft 35, compressing the spring 42 and withdrawing the clutch-lug 41 from engagement with the driving member 48 to arrest takeup, and at the same time the teeth of the gear 75 will be brought into mesh with the teeth of the reversing member or gear 71, such engagement being effected after the driving member and the clutch have been disengaged. inasmuch, however, as the teeth of the gear '75 may not at the instant enter or be opposite spaces between the teeth. of the reversing-gear 71, the finger '7 6 will give or flex sul'liciently to prevent any dam age to the parts, it being of course understood that the rock-shaf t 4 is always given a predetermined angular movement, and the spring-finger 76 will cause the proper meshing of the gears 75 and 71 the instant it can be effected.

Of course take-up is arrested as soon as the driving member 38 is disengaged irom the shaft 35; but at the same time the reversing device is brought into operation to reversely rotate the shaft 35, and conseii uently the J takeup roll is reversed. in its rotation and positive let-back is effected. When. the rock-shaft 4 returns to its normal position,

the plate 56 resumes the position shown. in-

the drawings, and the spring 42 will then act to throw the clutch into operative engagement with the driving member when the notch 39 comes opposite to the lug 4.1, the gears 75 and 71 being simultaneously disengaged. Detection of filling absence L either fork operates the rock-sl'iaft 4 sufficiently to arrest take-up and cause positive let-back in the manner above described. The arresting of take-up and the letting back of the cloth absolutely prevent the formation of a crack.

It will be manifest from the foregoing that the reversal of rotation of the take-up roll is effected by or tl'irough the driving means for said. roll when take-up is arrested, the driving means including the continuously-rotating driving member 38. The clutch operates to effect rotation of the take-up roll in a forward direction to take up the cloth or to effect reverse rotation. of the roll to effect let back of the cloth, according to the position of the clutch, so that the latter may be termed a controlling device and is so designated in some of the following claims.

Various changes or modifications may be made by those skilled in the art without departing from the spirit and scope of my invention, one practical embodiment whereof is particularly described in the specification hereof and illustrated in the accompanying drawings. 7

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, s

1. In a loom, a take-up roll, drivingmean L my therefor, including a continuously-rotating driving member, and means to automatically reverse the rotation of said roll by or through said driving means when take-up is arrested, to effect positive let-back of the cloth.

2. In a loom, a take-up roll, means to positively rotate the same, including a continuously-rotating driving member, and means to automatically reverse the normal direc tion of rotation of the said roll when take-up is arrested to effect positive let-back of the cloth.

3. In a loom, a take-up roll, means to positively rotate the same, and controlling mechanism intermediate said roll and the means for rotating it, to reverse automatically the direction of rotation of said roll when take-up is arrested, to thereby cause positive let-back.

4. In a loom, take-up mechanism, including a take-up roll, a continuously-rotating driving member, and transmitting connections between it and the roll to normally effect rotation thereof in one direction and cause take-u p of the cloth, said connections including an automatic controlling device to arrest take-up and reverse the direction of rotation of said roll, whereby positive let back is effected.

5. In a loom, a filling-detector, take-up mechanism, including a take-up roll, a contimiouslyrotati1ig driving member, a rollreversing device actuated thereby, a clutch operatively connected with said take-up roll, and means operative by or through detection of filling failure by the detector to shift the clutch from cooperation with the driving member .into cooperation with the reversing device, to reverse the rotation of the take-up roll and cause positive let-back.

6. In take-up mechanism for looms, a take-up roll, a rotatable shaft, positive transmitting connections between it and the said roll, a contini.1ouslyrotating driving member loose on the shaft, a reversing member in continuous engagement with and o positel y rotated by the driving member, an a clutch to connect either the driving member or the reversing member and the shaft, to eflect positive take-up or positive let-back of said roll.

7. In take-up mechanism for looms, a take-up roll, a rotatable shaft positively connected with and to rotate the roll, two continuously and oppositely rotating members, and means to connect either member with. said sh aft to thereby rotate the take-up roll, one of said members effecting positive takeup and the other positive let-back of the roll.

8. in take-up mechanism for looms, a take-up roll, a rotatable shaft, positive transmitting connections between it and the said roll, a continuously-rotating driving member loose on the shaft, and having an attached gear, a reversing-gear in mesh at one side of its center with said attached gear, and continuously driven thereby, and a clutch connected with the shaft and having a gear and the reversing-gear, and vice versa, to

' effect take-up or let-back rotation, respectively, of the take-up roll.

9. I11 a loom provided with automatic filling-replenishing mechanism, and a fillingfork to effect the operation thereof upon filling failure, in combination, take-up mechanism, including a take-up roll, a continuouslyrotating driving member, a reversing device, and means operative upon detection of filling failure to arrest take-up and bring into operation the reversing device to positively turn back the take-up roll while filling is being replenished. I

10. In a loom, two filling-forks to detect on alternate picks, a take-up roll, a positively and continuously moving actuating device therefor, a clutch intermediate said device and roll, a reversing device for the latter, and means to render the clutch inoperative to effect take-up and to render operative the reversing device to cause positive let-b ack upon detection of absence of filling by either fork.

11. In a loom, two filling-forks to detect on alternate picks, take-up mechanism, including a take-up roll, a continuously-rm tated driving member, an oppositelynotated reversing member actuated thereby, transmitting-gearing connected with said roll, and means operative upon detection of absence of filling by either fork to disconnect the driving member and said transmittinggearing arresting take-up, and connect said gearing and the reversing member, to etTect positive let-back.

12. In take-up mechanism for looms, a take-up roll, a rotatabie shait, speed-redueing gearing operatively connecting it and said roll, a continuously-rotating driving member loose on the shaft, a reversing-gear contmuously rotated by said member, a

clutch to normally connect the shaft and y the clutch device movable into and said driving member, said clutch having a connected gear, and yieldingly-acting means to release the driving member and clutch and bring the connected gear oi the latter into mesh with the reversing-gear, the latter remaining in mesh with the driving member to reverse the take-up roll and efi'ect let-back.

13. In a loom, take-up mechanism, including a take-up roll, a continuously-rotating driving member, having a notch and an at tached gear, a shalt on which said member loosely mounted and operatively connected with the take-up roll, a reversing-gear in mesh with said connected gear, a clutch device rotatable with the shaft and. having a lug to enter the notch of and connect the driving member and the shaft, to e'llect take-up, a gear on out of mesh with the reversing-gear, and means operative automatically upon a predetermined change in the operation 01 the loom to withdraw the lug from the notch, releasing the shaft, and thereafter bringing into mesh the clutch and reversing gears, to reverse rota tion of the take-up roll until the driving member has made one revolution.

14. In a loom, take-up mechanism, including a take-up roll, a eontinuously-rotating driving member, making one revolution for each pick, a reversing device actuated by said driving member, transmitting-geariug connected with the take-up roll, and means operative automatically upon a predetermined change in the operation of the loom to disconnect the driving member and said transmitting-gearing and operatively eonnect the latter and the reversing device, to arrest take-up and efi'ect positive iet-back during one revolution of the driving member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

(HARh as F. ROPE R.

Vitnesses GEORGE ()ris DRAPER, Eunns'r W. Woon. 

